When the trac light is off, on a Buick Century, the traction control monitoring system is disengaged. It is recommended to have the trac system engaged on wet roads.
Off
"Over Drive Off"
It means you have turned the Traction Control off.
Your car is equipped with Traction Control. This light means it is turned off.
Trac off means your traction control is turned off.
It's a common problem with Scion XB's. I have the same year and the same thing happened to me. I researched it quite a bit before taking it to the shop and from what I could tell, often this is a vacuum leak. And that was exactly what is was for me. Not typically an expensive fix other than the diagnostic fee.
How To Fix vsc,trac off and engine light on for 2009 Toyota Sienna
The TRAC OFF light is usually caused by a problem in the ABS system. See the link TRAC OFF DESCRIPTION link below for more info.- TechJK -------------
What does trac off and abs light mean on a 2004 chevy impala
Problem with the ABS.
my trac off light comes on in my 2002 cavalier then the car cuts off, but will start back up minutes later then the check engine light will come on and they both stay on